Patagonia may be the most famous outdoor fleece provider, so when they say they have a new model you know the team at BlackSheep is interested. The R1 Ultralight is part of Patagonia’s Free Wall kit, a collection of gear meant to meet the demands of changing weather on the mountain. The Patagonia R1 Ultralight was my go to Fleece for summer 2026 and I found it a worthy addition to Patagonia’s fleece heritage.
Patagonia R1 Ultralight Key Specs
- Material: 4.6-oz 100% recycled polyester flat-faced double knit
- Origin: Vietnam
- Size Tested: XL
- Weight: 305 grams
- Tester Size: 187cm, 92 kg
The Patagonia R1 Ultralight Hoody is a key part of the Free Wall Kit. Designed to be worn as a stand alone piece or a midlayer under the Houdini Rock jacket and provide active warmth while climbing. Though I do not climb, I carried this fleece all around the Swiss Alps and got a good grasp on its workmanship and use case as a non-rock climber.
Materials and Craftsmanship
The Patagonia R1 Ultralight has a smooth outer face designed to allow it to be snag free under layers and on rock. I do not climb so I did not get to try this fleece in its perfectly intended environment but it proved great as a hiking mid-layer. Comfortable under Gore-tex and on it’s own.
The breathable fabric on the inside is really comfortable next-to-skin. In fact, I am writing this review with no shirt underneath. A few rainy days this year I removed my wet layer to wear this as my next to skin layer to stay warm. It’s like putting on a pajama top that is functional beyond the couch all the way to the summit.
Along one edge of a chest zipper there is a little pilling in two spots. It has not gotten worse over time and I will follow-up here if it does.
Fit and Function
Unlike the recently reviewed Capilene Cool Sun Hoody, the R1 Ultralight fits more tailored. The hem length is similar, a few inches below the waistline. The arms and body are definitely slimmer and this makes sense. This a warmth piece not indeed to loft air underneath and baggier mid-layers under jackets can be bulky.
The center front zip is deep! No doubt, this is meant to help dump heat and it does its job well. It also allows the fleece to be opened large enough to put on or take-off the hoody without removing your helmet. Obviously if you have the hood on under your helmet you will need to remove the helmet.
At both sides of the center zip are two large napoleon pockets. They easily swallow a large iPhone, lift passes, or a small wallet. It’d also swallow a carabiner or tether if need be. In the left chest pocket is an embossed spiral. I am not sure what this is for, nor have I received a reply from Patagonia from what this is for. Let the conspiracy theories fly! The chest zippers eschew the chord pulls for a locking zip pull to make sure any valuables do not fall out.
The R1 Ultralight has no hand pockets by design. It is meant to be worn under a harness, so the fleece stays slim and sits flat without the pockets catching on the harness or the gear clipped to it. I didn’t miss them as my pants and shorts have pockets and most of the summer I had on a backpack with a waist belt that would have blocked pockets on the fleece.
Hood
The hood will easily fit under a hood and does double duty as acting as a toque should you not have one on hand. There are no adjustment toggles but there is a an orange elastic that runs around the hem of the hood and keeps its just snug enough to provide coverage but not get into the way. It will easily fit under a helmet while climbing. Inside there are two small panels of fleece that have been sewn in with the smooth side towards the wearers mouth.
The Patagonia R1 Ultralight on the Mountain
Patagonia has met its vision with the R1 Ultralight. It is a lightweight and breathable fleece that was a great addition to my hiking kit. Admittedly, I did not use it as much as I anticipated. Europe had a heat wave that lasted nearly all summer long and made anything more than a sun shirt overkill for 99% of the time. When I did need to pull out the R1 Ultralight, it was great. It accompanied me on every trip to a mountain hut. I had anticipated wearing it more at home in Squamish but summer refuses to quite. I’ll be sure to bring it on the skin track this winter for further testing.
To pick up a R1 Ultralight Hoody in the States head to Patagonia. For Canada, head to Patagonia Canada.
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BlackSheep was provided with a free sample of the Patagonia R1 Ultralight Hoody for this review. This in no way affected our editorial stance. This post also contains affiliate links; if you choose to purchase gear through these links, we may earn a small commission which supports our independent testing at no extra cost to you.
